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xixCoaxial Cable 277Fiber-Optic Cable 277Describe LAN Topologies and Architectures 279Describe LAN Topologies 280Physical Topologies 281Logical Topologies 281Describe LAN Architectures 282Ethernet 282Token Ring 282FDDI 283Identify Standards Organizations 283Identify Ethernet Standards 285Explain Cabled Ethernet Standards 285Ethernet Technologies 286Summary of Ethernet Technologies 287Explain Wireless Ethernet Standards 288Explain the OSI and TCP/IP Data Models 289Define the TCP/IP Model 289Application Protocols 290Transport Protocols 291Internet Protocols 291Network Access Protocols 291Define the OSI Model 292Compare the OSI and TCP/IP Models 293Describe How to Configure a NIC and a Modem 294Install or Update a NIC Driver 294Uninstall a NIC Driver 295Attach the Computer to an Existing Network 295Describe the Installation of a Modem 297AT Commands 299Identify the Names, Purposes, and Characteristics of OtherTechnologies Used to Establish Connectivity 299Describe Telephone Technologies 300Analog Telephone 300Integrated Services Digital Network (ISDN) 300Digital Subscriber Line (DSL) 301Define Power Line Communication 302Define Broadband 303Cable 303DSL 303
xxIT Essentials: PC Hardware and Software Companion GuideISDN 304Satellite 304Define VoIP 304Identify and Apply Common Preventive Maintenance TechniquesUsed for Networks 305Troubleshoot a Network 305Review the Troubleshooting Process 306Identify Common Network Problems and Solutions 308Summary 309Summary of Exercises 310Check Your Understanding 310Chapter 9 Fundamental Security 313Objectives 313Key Terms 313Explain Why Security Is Important 315Describe Security Threats 316Define Viruses, Worms, and Trojan Horses 317Explain Web Security 318Define Adware, Spyware, and Grayware 318Explain Denial of Service 319Describe Spam and Popup Windows 319Explain Social Engineering 320Explain TCP/IP Attacks 320Explain Hardware Deconstruction and Recycling 321Identify Security Procedures 321Explain What Is Required in a Basic Local Security Policy 322Explain the Tasks Required to Protect Physical Equipment 323Describe Ways to Protect Data 324Password Protection 324Data Encryption 326Port Protection 326Data Backups 327File System Security 327Describe Wireless Security Techniques 328
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CHAPTER 7Fundamental Printers and S
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GlossaryThis glossary defines many
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ase station 3AppleTalk A protocol s
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desktop computer 7crosstalk Interfe
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dynamic routing 9Domain Name System
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floppy data cable 11FFast Ethernet
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Regedit 23Printer Control Language
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three-claw part retriever 27surge s
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virtual memory 29Uninterruptible Po
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